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Finding the Fourth Proportional to 12,636.88, 18,960.36 and 7,094.08

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Solution

The fourth proportional to 12,636.88, 18,960.36 and 7,094.08 is: 10,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.88 : 18,960.36 = 7,094.08 : x
  2. Step 2: Convert to fraction form
    12,636.88/18,960.36 = 7,094.08/x
  3. Step 3: Cross multiply
    12,636.88x = 18,960.36 × 7,094.08
  4. Step 4: Simplify right side
    12,636.88x = 134,506,310.67
  5. Step 5: Solve for x
    x = 134,506,310.67/12,636.88
  6. Step 6: Final answer
    x = 10,643.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.